CN105157323B - The Defrost method of a kind of wind cooling refrigerator and except defrosting system - Google Patents

The Defrost method of a kind of wind cooling refrigerator and except defrosting system Download PDF

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Publication number
CN105157323B
CN105157323B CN201510592405.3A CN201510592405A CN105157323B CN 105157323 B CN105157323 B CN 105157323B CN 201510592405 A CN201510592405 A CN 201510592405A CN 105157323 B CN105157323 B CN 105157323B
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temperature
evaporator
defrosting
time
compressor
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CN105157323A (en
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吴启楠
雒合军
王丹
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NANJING SKYWORTH ELECTRIC APPLIANCE RESEARCH INSTITUTE Co Ltd
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NANJING SKYWORTH ELECTRIC APPLIANCE RESEARCH INSTITUTE Co Ltd
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Abstract

The invention discloses a kind of Defrost method of wind cooling refrigerator and except defrosting system, the Defrost method includes:Environment temperature is divided into multiple temperature ranges from low to high in advance;Detection environment temperature simultaneously judges the temperature range residing for environment temperature;Detect the temperature of evaporator and judge whether the temperature of evaporator is less than preset temperature;Calculate the compressor accumulative working time;When the temperature of evaporator is less than preset temperature, the working time that temperature range and compressor according to residing for environment temperature add up, start the defrosting to evaporator.The present invention is according to different environment temperatures, judge that compressor accumulated running time, setting defrosting started and the defrosting end time automatically, without time defrosting and design door switch circuit, solve traditional wind cooling refrigerator and need to defrost manually, the problem of cost that the defect of timing automatic defrosting and design door switch, door switch circuit are brought is high, cost is reduced, electric energy has been saved.

Description

The Defrost method of a kind of wind cooling refrigerator and except defrosting system
Technical field
The present invention relates to refrigerator field, the Defrost method of more particularly to a kind of wind cooling refrigerator and except defrosting system.
Background technology
Current refrigerator market competition is more and more fierce, and wind cooling refrigerator is with frostless, and the uniform advantage of temperature progressively replaces Direct cooling refrigerator.
The defrosting system that removes of current wind cooling refrigerator has following several:A kind of Timer Controlling defrost, as shown in figure, i.e. timing Defrosting.Refrigerator operation cooling time is accumulative 8 hours, the contact switch K1 closures of timer 100, the electrified regulation of heater 200 Frost, compressor 300 is shut down, and when defrosting thermostat K2 temperature rises to 7 degree, is stopped heating, is delayed 7 minutes, compressor 300 is transported OK.The shortcoming of the method is in environment temperature relatively low such as autumn and winter, and the cooling time refrigerator frosting of 8 hours is more serious than spring and autumn Much, it is necessary to flower long time defrosting.Because defrosting process press is out of service, defrosting for a long time causes refrigerated storage temperature to raise, Food decay, it is impossible to fresh-keeping.
It is another, mounting temperature sensor on the position of defrost is most difficult in evaporator, hair installs heater under the vaporizers. By detecting the time that refrigerator doors are opened, time × 220 that accumulated time+the have refrigerator doors run using compression algorithm machine are opened >24hr and compressor operating accumulated time>360min, into automatic defrosting, Defrost heater work, when defrosting sensor is high When 7 DEG C, Defrost heater is stopped.The shortcoming control thinking of the method is complicated, and structure realizes complexity, not only increases Door detection circuit, door switch so that refrigerator cost raise, the actual use of user is not met also, if user door opening time compared with Long, press is not shut down for a long time, and each compartment temperature of refrigerator can be caused too low.
Therefore, existing technology could be improved and improve.
The content of the invention
In view of in place of above-mentioned the deficiencies in the prior art, it is an object of the invention to provide a kind of Defrost method of wind cooling refrigerator With except defrosting system, according to the working time of different environment temperature and compressor, intelligent defrosting, without designing door switch circuit, Reduce cost.
In order to achieve the above object, this invention takes following technical scheme:
A kind of Defrost method of wind cooling refrigerator, methods described includes step:
A, environment temperature is divided into multiple temperature ranges from low to high in advance;
B, detect environment temperature and judge the temperature range residing for environment temperature;Detect the temperature of evaporator and judge evaporation Whether the temperature of device is less than preset temperature;Calculate the compressor accumulative working time;
C, when the temperature of evaporator is less than preset temperature, temperature range and compressor according to residing for environment temperature add up Working time, start defrosting to evaporator.
In the Defrost method of described wind cooling refrigerator, after the step C, in addition to step:
D, compressor shutdown, Defrost heater electrified regulation give evaporator defrosting;
E, when the temperature of evaporator rises above preset temperature, Defrost heater stops heating, and in preset time Afterwards, compressor is started.
In the Defrost method of described wind cooling refrigerator, the step A is specifically included:Environment temperature is divided from low to high in advance For the first temperature range, interval second temperature, the 3rd temperature range and the 4th temperature range.
In the Defrost method of described wind cooling refrigerator, the step C is specifically included:
It is less than preset temperature, environment temperature in the temperature of evaporator and is in the first temperature range and the accumulative work of compressor When time reaches the very first time, start the defrosting to evaporator;
It is less than preset temperature, environment temperature in the temperature of evaporator and is in the work that second temperature is interval and compressor is accumulative When time reached for the second time, start the defrosting to evaporator;
It is less than preset temperature, environment temperature in the temperature of evaporator and is in the 3rd temperature range and the accumulative work of compressor When time reached for three time, start the defrosting to evaporator;
It is less than preset temperature, environment temperature in the temperature of evaporator and is in the 4th temperature range and the accumulative work of compressor When time reached for four time, start the defrosting to evaporator;
Wherein, the times of the second times of very first time < the 3rd time < of < the 4th.
In the Defrost method of described wind cooling refrigerator, first temperature range is the temperature range less than 15 DEG C;Second Temperature range is more than or equal to 15 DEG C, the temperature range less than 20 DEG C;3rd temperature range is more than or equal to 20 DEG C, less than 30 DEG C Temperature range;4th temperature range is the temperature range more than 30 DEG C.
A kind of wind cooling refrigerator remove defrosting system, including:
Interval setup module, for environment temperature to be divided into multiple temperature ranges from low to high;
Temperature detecting module, the temperature for detecting environment temperature and evaporator;
Timing module, the working time accumulative for calculating compressor;
Defrost starting module, for judging temperature range residing for environment temperature, judging whether the temperature of evaporator is less than Preset temperature;When the temperature of evaporator is less than preset temperature, temperature range and compressor according to residing for environment temperature add up Working time, start defrosting module evaporator is defrosted;
Defrost module, for controlling compressor and Defrost heater to defrost evaporator.
Described wind cooling refrigerator remove defrosting system in, it is described defrosting module specifically for:Compressor shutdown is controlled, and makes to remove White heater electrified regulation, gives evaporator defrosting;When the temperature of evaporator rises above preset temperature, control defrosting heating Device stops heating, and after the preset lime, starts compressor.
Described wind cooling refrigerator remove defrosting system in, the interval setup module specifically for by environment temperature from low to high It is divided into interval the first temperature range, second temperature, the 3rd temperature range and the 4th temperature range.
Described wind cooling refrigerator remove defrosting system in, it is described defrosting starting module specifically for:
Judge the temperature range residing for environment temperature, judge whether the temperature of evaporator is less than preset temperature;
It is less than preset temperature, environment temperature in the temperature of evaporator and is in the first temperature range and the accumulative work of compressor When time reaches the very first time, start the defrosting to evaporator;
It is less than preset temperature, environment temperature in the temperature of evaporator and is in the work that second temperature is interval and compressor is accumulative When time reached for the second time, start the defrosting to evaporator;
It is less than preset temperature, environment temperature in the temperature of evaporator and is in the 3rd temperature range and the accumulative work of compressor When time reached for three time, start the defrosting to evaporator;
It is less than preset temperature, environment temperature in the temperature of evaporator and is in the 4th temperature range and the accumulative work of compressor When time reached for four time, start the defrosting to evaporator;
Wherein, the times of the second times of very first time < the 3rd time < of < the 4th.
Described wind cooling refrigerator is removed in defrosting system, and first temperature range is temperature range less than 15 DEG C;Second Temperature range is more than or equal to 15 DEG C, the temperature range less than 20 DEG C;3rd temperature range is more than or equal to 20 DEG C, less than 30 DEG C Temperature range;4th temperature range is the temperature range more than 30 DEG C.
Compared to prior art, the Defrost method for the wind cooling refrigerator that the present invention is provided and except in defrosting system, the defrosting side Method includes:Environment temperature is divided into multiple temperature ranges from low to high in advance;Detection environment temperature is simultaneously judged residing for environment temperature Temperature range;Detect the temperature of evaporator and judge whether the temperature of evaporator is less than preset temperature;Compressor is calculated to add up Working time;When the temperature of evaporator is less than preset temperature, temperature range and compressor according to residing for environment temperature are tired out The working time of meter, start the defrosting to evaporator.The present invention, according to different environment temperatures, is sentenced by detecting environment temperature Disconnected compressor accumulated running time, setting defrosting started and the defrosting end time automatically, without time defrosting and design door switch electricity Road, solving traditional wind cooling refrigerator need to be defrosted manually, and the defect of the timing automatic defrosting of environment temperature is not considered and needs design gate to open Pass, door switch circuit, the detection unpractical defect of door switch signal complex control logic, reduce the cost of wind cooling refrigerator.
Brief description of the drawings
Fig. 1 is existing wind cooling refrigerator except the control principle drawing of defrosting system;
The method flow diagram of the Defrost method for the wind cooling refrigerator that Fig. 2 provides for the present invention;
Fig. 3 is the wind cooling refrigerator of the invention provided except the structured flowchart of defrosting system.
Embodiment
The present invention provides a kind of Defrost method of wind cooling refrigerator and except defrosting system.To make the purpose of the present invention, technical scheme And effect is clearer, clear and definite, the present invention is described in more detail for the embodiment that develops simultaneously referring to the drawings.It should be appreciated that this The specific embodiment of place description is not intended to limit the present invention only to explain the present invention.
Referring to Fig. 2, the Defrost method for the wind cooling refrigerator that the present invention is provided, comprises the following steps:
S10, environment temperature T1 is divided into multiple temperature ranges from low to high in advance.The interval number of actual temp can basis Depending on actual conditions.In the present embodiment, temperature range is divided into four, i.e. step S10 is specifically included:In advance by environment temperature T1 It is divided into interval the first temperature range, second temperature, the 3rd temperature range and the 4th temperature range from low to high.
First temperature range, second temperature interval, the 3rd temperature range and the 4th temperature range can be according to air-cooled ice The long-term environment temperature in case location is configured.It is preferred that, first temperature range is the temperature range less than 15 DEG C (That is, 15 DEG C of T1 <);Second temperature interval is more than or equal to 15 DEG C, the temperature range less than 20 DEG C(That is, 15 DEG C≤T1 < 20 ℃);3rd temperature range is more than or equal to 20 DEG C, the temperature range less than 30 DEG C(That is, 30 DEG C of 20 DEG C≤T1 <);4th temperature Interval is the temperature range more than 30 DEG C(That is, 30 DEG C of T1 >).Environment temperature T1 is subjected to interval division in advance, is conducive to basis Different environment temperatures, sets different defrosting entry conditions, realizes intelligent defrosting.
S20, detection environment temperature T1 simultaneously judge the temperature range residing for environment temperature T1;Detect the temperature T2 of evaporator simultaneously Judge whether the temperature T2 of evaporator is less than preset temperature;Calculate the compressor accumulative working time.Specifically, in wind cooling refrigerator Cold sotrage door hinge cap in be provided with the first temperature sensor for detecting environment temperature, pass through the first temperature sensor and detect ring Border temperature.The top of the evaporator is provided with second temperature sensor, and the temperature of evaporator is detected by second temperature sensor Degree.The compressor accumulative working time is calculated by timer.
S30, evaporator temperature be less than preset temperature when, temperature range and compressor according to residing for environment temperature T1 The accumulative working time, start the defrosting to evaporator.The preset temperature can be configured as needed, it is preferred that described Preset temperature is 7 DEG C.The preset temperature has ensured that the refrigeration of food in wind cooling refrigerator will not receive influence because of defrosting.
The present invention, according to different environment temperatures, judges that compressor accumulated running time is automatic by detecting environment temperature Setting defrosting starts and the defrosting end time, without time defrosting and design door switch circuit, and solving traditional wind cooling refrigerator needs Defrosting manually, the defect of the timing automatic defrosting of environment temperature is not considered and door switch, door switch circuit, detection door switch need to be designed The unpractical defect of signal complex control logic, reduces the cost of wind cooling refrigerator.
Further, after the defrosting to evaporator is started, it is necessary to carry out defrosting to evaporator and act, the defrosting Method also includes step:
S40, compressor shutdown, Defrost heater electrified regulation give evaporator defrosting.The Defrost heater is arranged on steaming The side of device is sent out, the temperature of evaporator is improved by the heating of itself, the purpose of defrosting is reached.
S50, when the temperature of evaporator rises above preset temperature, Defrost heater stops heating, and when default Between after, start compressor.The preset time can be configured as needed, it is preferred that be 8 minutes.That is, in evaporator Temperature is risen to after more than 7 DEG C, Defrost heater is stopped heating, and after 8 minutes, restarts compressor, and evaporator exists This is defrosted in 8 minutes using the remaining temperature of Defrost heater, has greatly saved electric energy.
Further, the step S30 is specifically included:
Being less than preset temperature, environment temperature T1 in the temperature T2 of evaporator, to be in the first temperature range and compressor accumulative When working time reaches the very first time, start the defrosting to evaporator;
It is less than that preset temperature, environment temperature T1 are in that second temperature is interval and compressor is accumulative in the temperature T2 of evaporator When working time reached for the second time, start the defrosting to evaporator;
Being less than preset temperature, environment temperature T1 in the temperature T2 of evaporator, to be in the 3rd temperature range and compressor accumulative When working time reached for three time, start the defrosting to evaporator;
Being less than preset temperature, environment temperature T1 in the temperature T2 of evaporator, to be in the 4th temperature range and compressor accumulative When working time reached for four time, start the defrosting to evaporator;
Wherein, the times of the second times of very first time < the 3rd time < of < the 4th.The very first time, the second time, Three times and the 4th time can be configured according to actual conditions, it is preferred that the very first time is 4 hours, when described second Between be 6 hours, the 3rd time be 8 hours, the 4th time be 10 hours.
So, when environment temperature is relatively low(Evaporator is more easy to frosting), the compressor continuous firing shorter time(4h)Just Defrosting, when environment temperature is higher, the compressor continuous firing long period just defrosts, and has not only greatly saved electric energy, and The defrosting of higher efficiency is realized, intelligent defrosting is also achieved, without control manually, great convenience is provide the user.
In summary, the Defrost method of wind cooling refrigerator that the present invention is provided, without defrosting manually, it is to avoid timing automatic to remove The defect that frosty-zone comes, without designing door switch, door switch circuit and control logic circuit for detecting door switch signal, is saved Hardware cost;Moreover, different environment temperatures and the working time of different compressors is corresponding, it is used as the bar for starting defrosting Part, realizes defrosting more than low temperature, and high temperature is defrosted less, and the change automatically according to environment is defrosted, and improves defrosting effect, is saved Electric energy.
The Defrost method of the wind cooling refrigerator provided based on above-described embodiment, the present invention also provides a kind of defrosting of wind cooling refrigerator System, as shown in figure 3, described except defrosting system includes:Interval setup module 10, temperature detecting module 20, timing module 30, defrosting Starting module 40 and defrosting module 50.
The interval setup module 10, for environment temperature T1 to be divided into multiple temperature ranges from low to high.Actual temp Depending on interval number can be according to actual conditions.In the present embodiment, the temperature range is four.That is, described interval setting mould Block 10 is specifically for environment temperature to be divided into the first temperature range, second temperature interval, the 3rd temperature range and the from low to high Four temperature ranges.
First temperature range, second temperature interval, the 3rd temperature range and the 4th temperature range can be according to air-cooled ice The long-term environment temperature in case location is configured.It is preferred that, first temperature range is the temperature range less than 15 DEG C (That is, 15 DEG C of T1 <);Second temperature interval is more than or equal to 15 DEG C, the temperature range less than 20 DEG C(That is, 15 DEG C≤T1 < 20 ℃);3rd temperature range is more than or equal to 20 DEG C, the temperature range less than 30 DEG C(That is, 30 DEG C of 20 DEG C≤T1 <);4th temperature Interval is the temperature range more than 30 DEG C(That is, 30 DEG C of T1 >).Environment temperature T1 is subjected to interval division in advance, is conducive to basis Different environment temperatures, sets different defrosting entry conditions, realizes intelligent defrosting.
The temperature detecting module 20, the temperature T2 for detecting environment temperature T1 and evaporator.Specifically, the temperature Detection module 20 includes the first temperature sensor and second temperature sensor.First temperature sensor is arranged on wind cooling refrigerator Cold sotrage door hinge cap in, for detecting environment temperature T1.The second temperature sensor is arranged on the top of evaporator, for examining Survey the temperature T2 of evaporator.
The timing module 30, the working time accumulative for calculating compressor.The timing module 30 includes timer, The compressor accumulative working time is calculated by timer.
The defrosting starting module 40, for the temperature for judging temperature range residing for environment temperature T1, judging evaporator Whether T2 is less than preset temperature;When the temperature T2 of evaporator is less than preset temperature, the humidity province according to residing for environment temperature T1 Between and compressor add up working time, start defrosting module 50 evaporator is defrosted.The preset temperature can be according to need It is configured, it is preferred that the preset temperature is 7 DEG C.The preset temperature has ensured the refrigeration of food in wind cooling refrigerator not Influence can be received because of defrosting.
The defrosting module 50, for controlling compressor and Defrost heater to defrost evaporator.
The present invention detects environment temperature by temperature detecting module 20, according to different environment temperatures, judges that compressor tires out Meter run time sets defrosting and started and the defrosting end time automatically, without time defrosting and design door switch circuit, solves Traditional wind cooling refrigerator need to be defrosted manually, and the defect of the timing automatic defrosting of environment temperature is not considered and door switch, door switch need to be designed Circuit, the detection unpractical defect of door switch signal complex control logic, reduce the cost of wind cooling refrigerator.
Further, it is described defrosting module 50 specifically for:Compressor shutdown is controlled, and adds Defrost heater energization Heat, gives evaporator defrosting;When the temperature of evaporator rises above preset temperature, control Defrost heater stops heating, and After the preset lime, compressor is started.The Defrost heater is arranged on the side of evaporator, is carried by the heating of itself The temperature of high evaporator, reaches the purpose of defrosting.The preset time can be configured as needed, it is preferred that be 8 minutes. That is, defrosting module 50 after the temperature of evaporator rises to more than 7 DEG C, make Defrost heater stop heat, and 8 minutes it Afterwards, restart compressor, evaporator is defrosted in this is 8 minutes using the remaining temperature of Defrost heater, greatly save Electric energy.
Further, it is described defrosting starting module 40 specifically for:
Judge the temperature range residing for environment temperature T1, judge whether the temperature T2 of evaporator is less than preset temperature;
Being less than preset temperature, environment temperature T1 in the temperature T2 of evaporator, to be in the first temperature range and compressor accumulative When working time reaches the very first time, start the defrosting to evaporator;
It is less than that preset temperature, environment temperature T1 are in that second temperature is interval and compressor is accumulative in the temperature T2 of evaporator When working time reached for the second time, start the defrosting to evaporator;
Being less than preset temperature, environment temperature T1 in the temperature T2 of evaporator, to be in the 3rd temperature range and compressor accumulative When working time reached for three time, start the defrosting to evaporator;
Being less than preset temperature, environment temperature T1 in the temperature T2 of evaporator, to be in the 4th temperature range and compressor accumulative When working time reached for four time, start the defrosting to evaporator;
Wherein, the times of the second times of very first time < the 3rd time < of < the 4th.The very first time, the second time, Three times and the 4th time can be configured according to actual conditions, it is preferred that the very first time is 4 hours, when described second Between be 6 hours, the 3rd time be 8 hours, the 4th time be 10 hours.
So, when environment temperature is relatively low(Evaporator is more easy to frosting), the compressor continuous firing shorter time(4h)Just Defrosting, when environment temperature is higher, the compressor continuous firing long period just defrosts, and has not only greatly saved electric energy, and The defrosting of higher efficiency is realized, intelligent defrosting is also achieved, without control manually, great convenience is provide the user.
In summary, the wind cooling refrigerator that the present invention is provided removes defrosting system, without defrosting manually, it is to avoid timing automatic to remove The defect that frosty-zone comes, without designing door switch, door switch circuit and control logic circuit for detecting door switch signal, is saved Hardware cost;Moreover, different environment temperatures and the working time of different compressors is corresponding, it is used as the bar for starting defrosting Part, realizes defrosting more than low temperature, and high temperature is defrosted less, and the change automatically according to environment is defrosted, and improves defrosting effect, is saved Electric energy.
Based on above-described embodiment provide wind cooling refrigerator remove defrosting system, the present invention a kind of wind cooling refrigerator is also provided, including Wind cooling refrigerator as described above removes defrosting system.Because the principle of the defrosting of the wind cooling refrigerator is detailed in the above-described embodiments Illustrate, will not be repeated here.
It is understood that for those of ordinary skills, can be with technique according to the invention scheme and its hair Bright design is subject to equivalent substitution or change, and all these changes or replacement should all belong to the guarantor of appended claims of the invention Protect scope.

Claims (4)

1. a kind of Defrost method of wind cooling refrigerator, it is characterised in that methods described includes step:
A, environment temperature is divided into multiple temperature ranges from low to high in advance;
B, detect environment temperature and judge the temperature range residing for environment temperature;Detect the temperature of evaporator and judge evaporator Whether temperature is less than preset temperature;Calculate the compressor accumulative working time;
C, when the temperature of evaporator is less than preset temperature, the accumulative work of temperature range and compressor according to residing for environment temperature Make the time, start the defrosting to evaporator;
After the step C, in addition to step:
D, compressor shutdown, Defrost heater electrified regulation give evaporator defrosting;
E, when the temperature of evaporator rises above preset temperature, Defrost heater stops heating, and after the preset lime, Start compressor;
In the step E, the preset temperature is 7 DEG C, and the preset time is 8 minutes;
Environment temperature is divided into interval the first temperature range, second temperature, the 3rd temperature range and the 4th temperature from low to high in advance Degree is interval;
It is less than preset temperature, environment temperature in the temperature of evaporator and is in the first temperature range and compressor accumulative working time When reaching the very first time, start the defrosting to evaporator;
It is less than preset temperature, environment temperature in the temperature of evaporator and is in the working time that second temperature is interval and compressor is accumulative When reaching for the second time, start the defrosting to evaporator;
It is less than preset temperature, environment temperature in the temperature of evaporator and is in the 3rd temperature range and compressor accumulative working time When reaching for three time, start the defrosting to evaporator;
It is less than preset temperature, environment temperature in the temperature of evaporator and is in the 4th temperature range and compressor accumulative working time When reaching for four time, start the defrosting to evaporator;
Wherein, the times of the second times of very first time < the 3rd time < of < the 4th.
2. the Defrost method of wind cooling refrigerator according to claim 1, it is characterised in that first temperature range be less than 15 DEG C of temperature range;Second temperature interval is more than or equal to 15 DEG C, the temperature range less than 20 DEG C;3rd temperature range is big In equal to 20 DEG C, the temperature range less than 30 DEG C;4th temperature range is the temperature range more than 30 DEG C.
3. a kind of wind cooling refrigerator remove defrosting system, it is characterised in that including:
Interval setup module, for environment temperature to be divided into multiple temperature ranges from low to high;
Temperature detecting module, the temperature for detecting environment temperature and evaporator;
Timing module, the working time accumulative for calculating compressor;
Defrost starting module, is preset for judging temperature range residing for environment temperature, judging whether the temperature of evaporator is less than Temperature;When the temperature of evaporator is less than preset temperature, the work that temperature range and compressor according to residing for environment temperature add up Make the time, start defrosting module and evaporator is defrosted;
Defrost module, for controlling compressor and Defrost heater to defrost evaporator;
It is described defrosting module specifically for:Compressor shutdown is controlled, and makes Defrost heater electrified regulation, evaporator defrosting is given; When the temperature of evaporator rises above 7 DEG C of preset temperature, control Defrost heater stops heating, and in 8 points of preset time After clock, start compressor;
The interval setup module specifically for environment temperature is divided into from low to high the first temperature range, second temperature it is interval, 3rd temperature range and the 4th temperature range;
It is described defrosting starting module specifically for:
Judge the temperature range residing for environment temperature, judge whether the temperature of evaporator is less than preset temperature;
It is less than preset temperature, environment temperature in the temperature of evaporator and is in the first temperature range and compressor accumulative working time When reaching the very first time, start the defrosting to evaporator;
It is less than preset temperature, environment temperature in the temperature of evaporator and is in the working time that second temperature is interval and compressor is accumulative When reaching for the second time, start the defrosting to evaporator;
It is less than preset temperature, environment temperature in the temperature of evaporator and is in the 3rd temperature range and compressor accumulative working time When reaching for three time, start the defrosting to evaporator;
It is less than preset temperature, environment temperature in the temperature of evaporator and is in the 4th temperature range and compressor accumulative working time When reaching for four time, start the defrosting to evaporator;
Wherein, the times of the second times of very first time < the 3rd time < of < the 4th.
4. wind cooling refrigerator according to claim 3 remove defrosting system, it is characterised in that first temperature range be less than 15 DEG C of temperature range;Second temperature interval is more than or equal to 15 DEG C, the temperature range less than 20 DEG C;3rd temperature range is big In equal to 20 DEG C, the temperature range less than 30 DEG C;4th temperature range is the temperature range more than 30 DEG C.
CN201510592405.3A 2015-09-17 2015-09-17 The Defrost method of a kind of wind cooling refrigerator and except defrosting system Expired - Fee Related CN105157323B (en)

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